Ccleaner link. Use custom install so you can untick any toolbars offered. Or just untick if offered without the custom install option. FileHippo is a good site for downloading so just be aware of the options.
Job done. Ccleaner loaded and working. I could not see any mention of Index.dat files having been cleared although the box for those files was checked. I'll take it the files are indeed cleared.
Thanks for your help.